Improvement in spring-bed



UNITED STATES PATENT Onrrcn.

JEREMIAH FISK, OF AUGUSTA, MAINE.

IMPROVEMENT IN SPRING-BED.

Specification forming part of Letters Patent No. 92,949, dated July 27,1869.

To all whom it may concern:

Be it known that I, JEREMIAH FrsK, of Augusta, in the county ofKennebecand State of Maine, have invented an Improved Spring for Beds,Upholstery, and other purposes; and I do hereby declare that thefollowing, taken in connection with the drawings which accompany andform part of this specification, is a description of my inventionsufficient to enable those skilled in the art to practice it.

This invention consists in a spring of novel arrangement andconstruction, which is used most advantageously in numbers placed sideby side, and connected in pairs or in greater numbers.

The drawings exhibit my spring as applied to a bed for the support of amattress, Figure l showing said spring in side elevation, and Fig. 2 inplan, parts of the bedstead also showing incidentally in the drawings.

Each spring is made of one continuous wire, and several of them areunited by having the convolutions of each wire formed upon or embracingties or rods of any suitable material.

a denotes the continuous Wire, of which each spring is made, and b therods or ties about which the convolutions of the wire are placed, andwhich serve to unite two or more parallel springs.

To make the spring I proceed as follows: Pins or wires of suitable size,and corresponding to the position of the rods bin the completed springwhen not under stress, are iixed in location, and then the wire is woundaround the pin denoted by blfrom that to b2, to b3, to b4, to b5, to b,to 117, to b4, to ba, to b2, to b9, tobf, to b3, and so on, until thewire is wound around each pin back and forth, upon the system indicated,until it terminates upon pin I)27 in the illustration.

The pins on which the wire is wound are a little larger in diameter thanthe rods to be used to connect a series of parallel springs, so that,after a series of springs has been formed by winding the wire upon thepins, the springs may then be slipped upon rods or ties b, of suitablelength to receive any desired number of such springs, located parallelwith each other and at uniform distancesapart.

The springs may be kept from moving laterally on the rods or ties bydriving brads or tacks into the rods b, if of wood, so as to prevent thewire a from moving sidewise; or, if rods b are of metal, they may have aprojection or burr chipped up on either side ofv the wire a or, as shownin the drawings, rubber sleeves o may be slipped upon the ties b,on-eachv side ot' the wire a, said sleeves forming bunters to preventnoise when the upper parts ofthe spring are forced into contact with thelower parts, or strings or rope yarns may be woolded upon the ties oneither side of thc wire a.

Instead of using continuous ties b, the eyes formed in the wire a by itsconvolutions may be connected at the proper places by short pieces likerivets, and then a series of such springs may be united by cross-linesof any suitable material, which may, in some cases, be elastic orresilient.

Generally, it will be preferable to affix each spring, or some of an'assemblage of such springs, to their supports or foundations.

This spring, through primarily intended for use in beds, may be employedin various other situations, where other forms of springs are now used.

These springs are easily and cheaply made of any desired length and toll any space; for example, as a bed, or sofa bottom or back, severalsections of springs may be made in length, as well as in breadth. Thisspring, or several of them combined into sections, may be combined withother forms of springs when desired, or my spring may be used to supportother forms, or may be supported by them.

l claim- A compound spring made up of a series of springs formed fromwire coiled and arranged to be united by rods orties I), substantiallyas described.

JEREMIAH FISK.

Witnesses:

J. B. CROSBY, FRANoIs GoULD.

